How to find the radius of a circle when only the area is known?

Answers

Answer 1

Answer:

Divide the area by pi. Then, square root the answer.

Step-by-step explanation:

Area of a cirlce= pi r^2

Answer 2

Answer:

You have to divide by pi (3.14) APROXIMATELY and then divide what you get by the square root.


Related Questions

(5/10)^4 in exponential form

Answers

Answer:

[tex] 6.25 \times {10}^{ - 2} [/tex]

Step-by-step explanation:

[tex] { \bigg( \frac{5}{10} \bigg) }^{4} \\ \\ = {(0.5)}^{4} \\ \\ = 0.0625 \\ \\ = 6.25 \times {10}^{ - 2} [/tex]

Answer:

6.25 x 10-2

Step-by-step explanation:

7} = (4) -55) = 0
12
12
410
My Progress
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I NEED HELP ASAP

Answers

Answer:

-12

Step-by-step explanation:

helppppp me its for a grde

Answers

Answer:

567.7

Step-by-step explanation:

This is the correct answer because 7.4 would be the radius & 9.9 would be the height.

V=πr2h

3=π·7.42·9.9

3≈567.7

Hope this helps please mark as brainliest! Thx!‍‍➕➖➗

John ran the 200 meter dash and clocked the following times: 24.4, 27.2, 30.6, 24.1, 29.9, and 27.0. What was John's average time on the race?

Answers

Answer: 27.2

Step-by-step explanation: add up the values then divide by the amount of values (6)

Use the exterior angle theorem to find the value of x in the triangle below.



A
x = 7

B
x = 5

C
x = 12

D
x = 15

Answers

Answer:

A) x = 7

Step-by-step explanation:

7x + 1 + 7x + 6 + (180 - 15x) = 180

combine like terms:

-x + 187 = 180

subtract 187 form both side of the equation:

-x = -7

x = 7

A new test is developed to test for a certain allergy, giving "positive" or "negative" results to indicate that a person does or does not have the allergy. For a person who has the allergy, the test will give a positive result 82% of the time and a negative result (false negative) 18% of the time. For a person who does not have the allergy, the test will give a positive result (false positive) 10% of the time and a negative result 90% of the time. A study included a population of 10,000 people, and 1% of those studied where known to have the allergy. Fill in the missing values in the table below, and complete the statements that follow. Round the percentage to the nearest tenth, if necessary.

Answers

Answer:

the first blank is 82, the second blank is 8,910. I got that third blank wrong and it should be 7.1 I think. and the last block is should not. to find the third box all you need to do is:82+990=1,072 then divide 82 by 1,072 and round to the nearest tenth

Answer:

828,9107.6Should not

PLS HELP ITS TIMED TYSM!!!

Answers

Simplify the expression.

23
h

3
2

Any one know???????????

Answers

50 , 180-130=50 so it needs 50 to reach 180

The vertex of a quadratic function is (5,-6), what is the equation of the axis of symmetry in this function?

Answers

Answer:

x = 5

Step-by-step explanation:

A quadratic equation:

f(x) = y = a*x^2 + b*x + c

Has a vertex in a point:

(h, k) such that:

h = -b/2a

and:

k = f(-b/2a)

And the axis of symmetry (this is the line that cuts the graph in two halves) is:

x = h.

In this case, the vertex is (5, -6)

Then the axis of symmetry is:

x = 5.

3. The yearly profits of a company is $5,000. The profits have been decreasing by 6% per year.

a). Write an exponential decay function to represent this situation.

b). What will be the profits in 8 years? Round your answer to the nearest dollar.

10 Points question

Answers

Answer:

5000 X (0.96)^n

$3607

Step-by-step explanation:

Profit decreases at a rate of 6% per year = 100 - 6 = 96%

In year 1, profit would be = 5000 x 0.96 = 4800

In year 2 = 5000 x 0.96^2 =

5000 X (0.96)^n

5000 X (0.96)^8 = $3607

Help meeeeeeee!!!!!!!

Answers

c sorry if i’m wrong btw

Answer:

the answer is c

Step-by-step explanation:

If u add the values of the dots on set A it would be greater than set B.

A study by the department of education of a certain state was trying to determine the
mean SAT scores of the graduating high school seniors. The study found that the
mean SAT score was 447 with a margin of error of 21. Write a confidence interval for
the true mean SAT score of the graduating high school seniors.

Answers

Answer:

(426 ; 468)

Step-by-step explanation:

Confidence interval :

Mean score ± margin of error

Margin of Error = 21

Mean SAT score = 447

Hence,

447 ± 21

Lower boundary = 447 - 21 = 426

Upper boundary = 447 + 21 = 468

(426 ; 468)

25 points, please help!!! Find the indicated limit, if it exists. (see picture for limit)
Answer options:
a. 6
b. 0
c. 5
d. The limit does not exist.

Answers

Answer:

yes it exists.and answer is 5.

If the scale factor between trapezoid ABCD and trapezoid is GHIJ is 2, how many feet will side GJ be?

Answers

Kindly find required figure in the picture attached below :

Answer:

14 feets

Step-by-step explanation:

From Trapezoid ABCD ;

The longer base, AD = 7 feets

Shorter Base ; BC = 5 feets

The Trapezoid GHIJ

Shorter Base = HI

Longer base = GJ

Given that the scale factor between ABCD and GHIJ is 2 ; then

GJ is similar to AD

Hence, side GJ = 2 * length of AD

GJ = 2 * 7 = 14 feets

finding probability


.


.

Answers

Answer:

Hello! answer: 6

Hope that helps!

6! ( ˘ ³˘)♥︎



Happy to help! <3

Consider the equation: 5(3x - 9) = 2(6x + 9).
Part A
How many solutions will the equation have? Explain how you know.

Answers

Answer:

Photo math

Step-by-step explanation:

Get Photo math on your mobile device, it will give you the answer and explain it for free!

5 because this is a correct answer that I’m telling you

Help please :) find the missing measures

Answers

93 and x are supplementary angles
Since they both form a straight line
Supplementary angles is 180 degrees
180-93 = 87
Angle x = 87 degrees
Vertical lines are congruent
X and Z are vertical just like the 93 degree angles!

Therefore the solution is:
x = 87 degrees
z = 87 degrees
To find x and y you subtract 180 and 93
X=87
Z=87

Use the exterior angle theorem to find the value of x in the triangle below.



A
x = 7

B
x = 5

C
x = 12

D
x = 15

Answers

Answer:

Option A

Step-by-step explanation:

By using the definition of an exterior angle of a triangle,

"Measure of the exterior angle of a triangle is equal to the sum of measures of the opposite interior angles"

m∠STP = m∠SWT + m∠STW

Substitute the measures of the angles from the picture attached,

15x = (7x + 1) + (7x + 6)

15x = (7x + 7x) + (1 + 6)

15x = 14x + 7

15x - 14x = 7

x = 7

Therefore, Option A will be the correct option.

Helllp please
Find the area of The following figures. Dimensions are in centimeters.

Answers

Answer:

[tex]\huge\mathfrak\red{Answer...} \\ \\ area \: of \: square \: = side {}^{2} \\ \\ side = \: 6 \: cm \\ \\ area \: of \: square \: = 6 \times 6 \\ \\ area \: of \: square \: = 36 \: cm.sq \\ \\ area \: of \: semicircle \: = (1 \div 2)\pi \: r {}^{2} \\ \\ radius = 2 \: cm \\ \\ area \: of \: semicircle = 6.28 \: cm.sq \\ \\ area \: of \: whole \: figure \: = 36 + 6.28 \\ \\ area = 42.28 \: cm.sq[/tex]

Answer:

Seperate the shapes!

Step-by-step explanation:

CIRCLE

First we want to find the area of the circle which would be:

\pi r^{2}

3.14159265359 x 2^{2}

3.14159265359 x 4cm

= 12.5663706144cm^{2} /2 (must divide by two because it is half of a circle)

= 6.28318530718cm^{2}

RECTANGLE/SQUARE

Find the area of the square.

AREA = L x W

Length =  2cm + ?

Width = 6cm

To find the length we must use the diameter of the circle (which is the radius but times it by 2)

To find diameter: r x 2

= 2cm x 2

= 4cm

Length = 4 + 2 = 6cm

Width = 6 cm

Area (Length x Width) = 6cm x 6cm

= 36cm^{2}

TOTAL AREA:

Just add the area of the circle and the area of the square together.

Area total = 36cm^{2} + 6.28318530718cm^{2}

= 42.2831853072cm^{2}

* Also round your total answer to the nearest tenth or hundreth if needed to do so.

The diameter, D, of a sphere is 16.6 m. Calculate the sphere's volume, V. Use the value 3.14 forn, and round your answer to the nearest tenth. (Do not round any intermediate computations.) 3 Х ?​

Answers

Answer:

[tex]2395.1\:\mathrm{m^3}[/tex]

Step-by-step explanation:

The volume of a sphere is given by [tex]4\pi r^3[/tex]. Since a radius is half a diameter, the radius of the sphere is [tex]\frac{16.6}{2}=8.3[/tex].

Substituting values, we have:

[tex]V=\frac{4}{3}\pi (8.3^3)\approx \boxed{2395.1}[/tex]

whitch is greater 2 yards or 5 feet

Answers

Answer:

Two yards

Step-by-step explanation:

2 yards = 6 feet

*SOCIAL DISTANCE RULES APPLY IN YOUR STATE*

Answer:

2 yards

Step-by-step explanation:

Yes 1 yard equals 3 feet so 2 yards is 6 feet making 2 yards greater than 5 feet

Clay surveys members of his class to find out how many televisions they have in their homes. The thirteen responses he received are shown in the table. Which statement is true?


A) The mean is less than the mode.
B) The mean is less than the range.
C) The mean is greater than the range.
D) The median is greater than the mode.

Answers

Answer:

B, the mean is less than the range

Step-by-step explanation:

mean is 3.38 (rounded)

mode is 3

median is 3

range is 5

The mean is 3.38 and the range is 5, So the mean is less than the range. Option B is the correct one.

What are mean?

The mean is the average value which can be calculated by dividing the sum of observations by the number of observations

Mean = Sum of observations/the number of observations

Mean = [tex]\frac{1+5+2+3+4+6+3+1+3+4+3+5+4}{13}[/tex]

The mean is 3.38 (rounded)

Median represents the middle value of the given data when arranged in a particular order.

So, the Median would be 3.

Mode is that number that appears most frequently in the given set of data.

So, the Mode would be 3.

The range of a given set of data is the difference between the largest value and the smallest value.

So, the range would be 5

Learn more about mean and median;

https://brainly.com/question/17060266

PLS HELP ASAP I WILL GIVE BRAINLIEST
Find the equation of a parabola with focus (4,0) and vertex
at the origin.

Answers

[tex]y {2} = 16x[/tex]

The above is the equation of the parabola and the steps to solve it.

Help me pleaseeee with this question

Answers

Answer:

B. 7

Step-by-step explanation:

Count every number less than 70 (count the leaf plot numbers if that helps).

62,62,63,64,54,56,56 = 7 drivers that travel less than 70 mph

-6=2(u+3)-5u pls help me with this

Answers

Answer:

u=3

Step-by-step explanation:

-6=2u+3-5u

-6=-3u+3

3u=6+3

3u=9

u=3

PLS HELP :(
Find the volume of the cone, round your answer to the nearest tenth. Use 3.14 for
7.
3
5
units

Answers

Answer: 47.1

Step-by-step explanation:

1/3πr^2h

=1/3×π×32×5

=15π

= 47.123889803847 feet3

The answer is going to be 47.1

NEED HELP ASAP TAKING TEST A refrigeration unit at a restaurant is supposed to be kept at 40°F. An inspector would like to test the hypotheses H Subscript 0 Baseline: mu = 40 versus H Subscript alpha Baseline: mu not-equals40 where μ = the true mean temperature for all times of the day. A 98% confidence interval based upon a random sample of 40 temperatures is 40.5 degrees to 42.1 degrees. Using the interval, what decision should be made?

The null hypothesis should be rejected at the Alpha = 0.01 level.
The null hypothesis should be rejected at the Alpha = 0.02 level.
The null hypothesis should not be rejected at the Alpha = 0.05 level.
The null hypothesis should not be rejected at the Alpha = 0.10 level.

Answers

Answer:

,, the null hypothesis should be rejected at the alpha equals 0.02 level

I drank three cups of 2% milk yesterday. Each cup of milk provided 122 calories. How many calories did I get from the three cups of milk?

Answers

Answer:

366 calories

Step-by-step explanation:

122 * 3 = 366

Question 3 of 35
In O A, AC is congruent to
14.52
с
B
N
G
o
14.52
A. BD
B. GN
C. NO
O D. AO

Answers

The answer is d I’m pretty sure
i think the answer is D

can someone pls help i really don’t know what to do i keep getting it wrong i divide 12000 by 0.08 and get 150000 yet it’s still wrong SOMEONE ANYBODY PLSS HELPPP

Answers

Answer:

after tax the car is $12,960

Step-by-step explanation:

to find this first you need to find 8% of 12,000 which is 960

8/100 * 12,000/1=960

now add 960 to the original and that is your answer

Answer:

Step-by-step explanation:

Yes, the answer is 150000 , maybe its asking u to put it in some form.

85.000

/ 120.00

--------------                  

 17200/0.08            (Plus The Sales Tax)

  (21500)

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